Radiation detector module and imaging apparatus

Abstract

The embodiment of the utility model provides a radiation detector module and imaging equipment. The radiation detector module comprises a support frame, a detector circuit board, a positioning block assembly and a collimator assembly, the positioning block assembly comprises a first positioning block and a second positioning block, the detector circuit board is fixed to the first end of the supporting frame through the first positioning block, and the detector circuit board is fixed to the second end of the supporting frame through the second positioning block. The two ends of the collimator assembly are installed on the first positioning block and the second positioning block respectively, and the collimator assembly is located on the side, facing a radiation source, of the radiation detector element. In the embodiment of the invention, through the positioning block structures on the two sides, the collimator assembly can be easily replaced without influencing the position precision of the scintillator in the sensor, and the operability and the detection accuracy can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of imaging devices, and in particular to a radiation detector module and an imaging device. BACKGROUND

[0002] Medical imaging devices are indispensable tools in modern medical diagnosis. Various imaging devices enable doctors to observe the structure and function of the human body inside through different physical principles and technical means. Imaging devices are used to scan the examination object (such as a patient, a workpiece) in a non-invasive or non-destructive manner, so as to obtain the internal structure image of the anatomical tissue or part of interest of the examination object, so as to assist in diagnosis.

[0003] For example, a computed tomography (CT) device is usually used as a kind of medical imaging device to scan a patient to obtain a tomographic medical image of a part of interest of the patient to assist a doctor in diagnosis. The CT device utilizes X-ray and computer technology to scan the human body from multiple angles through a rotating X-ray emitter and a detector assembly, and a computer reconstructs the scan data into a tomographic image (cross-sectional image). The detector assembly (also referred to as a radiation detector module, etc.) of the CT device is a very critical component in the CT scanner, which receives the X-ray that has penetrated the human body and converts it into an electrical signal for further processing and image reconstruction by the computer system.

[0004] For example, the detector assembly of the CT device usually includes pixelated scintillators and photoelectric conversion devices arranged in sequence along the ray transmission direction, the scintillators are used to receive X-rays that have penetrated the patient and generate light, and the photoelectric conversion devices (such as photodiodes) convert the light generated by the scintillators into electrical signals. The detector assembly also includes a collimator for collimating the X-rays that have penetrated the patient to a specific direction to avoid or reduce interference between the pixels of the scintillators. The detector assembly also includes a signal processing circuit for processing the electrical signals generated by the photoelectric conversion devices, and a frame for supporting the collimator, the scintillators, the photoelectric conversion devices, the circuit board, and the heat dissipation device.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely describing the technical solutions of the present application, and for the convenience of understanding by those skilled in the art. CONTENT OF THE INVENTION

[0006] The inventor finds that the current detector assembly adopts a modular structure, the collimator of each detector module is integrally fixed to the frame, and the removal of the collimator during maintenance easily affects the position accuracy of the scintillator in the sensor, and further affects the accuracy of the detector assembly and the medical imaging device, so the operability of the collimator of the current detector module needs to be improved. In addition, each detector module has a small size, and a large number of detector modules of a specific size are required for a detector assembly of a specific size. In order to reduce the cost, it is necessary to provide a large-size detector module having equivalent or better operability and accuracy than the current detector module.

[0007] To solve at least one of the above technical problems or other similar problems, the embodiments of the present application provide a radiation detector module and an imaging device. In the radiation detector module, a collimator assembly can be easily separated from a support frame or a frame without affecting the installation or fixation of a scintillator and / or a signal processing circuit board on the support frame or the frame, and the position accuracy of the scintillator is not affected. The fixing strength of the collimator assembly is high, and the installation and maintenance cost is low. The embodiments of the present application also provide a large-size detector module which at least allows better operability when installing and maintaining the collimator and has good detector accuracy.

[0008] According to an aspect of the embodiments of the present application, a radiation detector module is provided, comprising:

[0009] a support frame comprising a first end portion and a second end portion arranged oppositely;

[0010] a detector circuit board, a first surface of the detector circuit board facing a radiation source is provided with a radiation detector element for receiving radiation emitted by the radiation source, and a second surface of the detector circuit board facing away from the radiation source is fixed to the support frame at least at the first end portion and the second end portion;

[0011] a positioning block assembly, the positioning block assembly comprises a first positioning block and a second positioning block, the first positioning block fixes the detector circuit board to the first end portion of the support frame, and the second positioning block fixes the detector circuit board to the second end portion of the support frame; and

[0012] a collimator assembly, two ends of the collimator assembly are respectively fixed to the first positioning block and the second positioning block, and the collimator assembly is located on a side of the radiation detector element facing the radiation source.

[0013] In some embodiments, the first end portion and the second end portion respectively have a first positioning column for positioning; and two ends of the detector circuit board respectively have a first positioning hole corresponding to the first positioning column.

[0014] In some embodiments, the first end portion and the second end portion further respectively have at least one second positioning post spaced apart from the first positioning post along the transverse direction of the support frame.

[0015] The two ends of the detector circuit board further respectively have a second positioning hole corresponding to the second positioning post.

[0016] In some embodiments, the first positioning hole and / or the second positioning hole is a waist-shaped hole, which has a first dimension along the transverse direction of the support frame larger than a second dimension along the longitudinal direction of the support frame.

[0017] In some embodiments, the first end of the first positioning block has a first positioning hole corresponding to the first positioning post of the first end portion, and the first end of the second positioning block has a first positioning hole corresponding to the first positioning post of the second end portion.

[0018] The first end of the first positioning block further has a second positioning hole corresponding to the second positioning post of the first end portion, and the first end of the second positioning block further has a second positioning hole corresponding to the second positioning post of the second end portion.

[0019] In some embodiments, the first positioning hole of the first positioning block is a circular hole through the first positioning block in a waist-shaped slot, and the first positioning hole of the second positioning block is a circular hole through the second positioning block in a waist-shaped slot.

[0020] In some embodiments, the first dimension of the waist-shaped slot along the transverse direction of the support frame is larger than the second dimension of the waist-shaped slot along the longitudinal direction of the support frame.

[0021] In some embodiments, the second end of the first positioning block has a receiving portion for connecting with the collimator assembly, and the second end of the second positioning block has a receiving portion for connecting with the collimator assembly.

[0022] The two ends of the collimator assembly respectively have an extension portion, and the extension portion of the first end of the collimator assembly is fixed in the receiving portion of the first positioning block, and the extension portion of the second end of the collimator assembly is fixed in the receiving portion of the second positioning block.

[0023] In some embodiments, the support frame has a first protrusion at a position corresponding to the receiving portion of the first positioning block, and the support frame has a second protrusion at a position corresponding to the receiving portion of the second positioning block.

[0024] The first protrusion supports the detector circuit board and the receiving portion of the first positioning block, and the second protrusion supports the detector circuit board and the receiving portion of the second positioning block.

[0025] In some embodiments, the receiving portion of the first positioning block and the receiving portion of the second positioning block are further respectively provided with a third positioning column for positioning the collimator assembly;

[0026] Both ends of the collimator assembly are further respectively provided with a third positioning hole corresponding to the third positioning column.

[0027] In some embodiments, the first end portion and the second end portion are arranged along the transverse segments of the support frame, and adjacent segments are at an angle and each segment is at least directed towards the radiation source.

[0028] In some embodiments, the first end portion and the second end portion respectively include a left segment, a middle segment and a right segment, the first positioning column is located on the middle segment, and the second positioning column is located on the left segment and / or the right segment.

[0029] In some embodiments, the first positioning block and the second positioning block are arranged along the transverse segments of the support frame and correspond to the arrangement of the first end portion and the second end portion along the segments of the support frame.

[0030] According to another aspect of the embodiments of the present application, there is provided an imaging device, which comprises an imaging apparatus and the radiation detector module as described in the above embodiments, and the imaging apparatus performs tomographic imaging of a detection object according to an electric signal generated by a photoelectric conversion element in a sensing assembly of the radiation detector module.

[0031] Specific embodiments of the application are disclosed herein, which illustrate the principles of the application and the practical application of those principles. It is understood that the embodiments of the application are not limited in scope to the specific embodiments disclosed. Many modifications, equivalents, and alternatives shown within the spirit and scope of the claims and the specification will be apparent to one of ordinary skill in the art. Embodiments of the application include all such modifications, equivalents, and alternatives. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

[0033] Figure 1 is a schematic diagram of a CT device according to an embodiment of the present application;

[0034] Figure 2 is a side view of a scanning gantry of a CT device according to an embodiment of the present application;

[0035] Figure 3 is a schematic diagram of a radiation detector module of an embodiment of the present application;

[0036] Figure 4 is another schematic diagram of a radiation detector module of an embodiment of the present application;

[0037] Figure 5 is a schematic diagram of a support frame and detector circuit board of an embodiment of the present application;

[0038] Figure 6 is a schematic diagram of a positioning hole shape of an embodiment of the present application;

[0039] Figure 7 is a schematic diagram of a positioning block assembly of an embodiment of the present application;

[0040] Figure 8 is another schematic diagram of a positioning block assembly of an embodiment of the present application;

[0041] Figure 9 is a schematic diagram of a middle section of a positioning block assembly of an embodiment of the present application;

[0042] Figure 10 is another schematic diagram of a middle section of a positioning block assembly of an embodiment of the present application;

[0043] Figure 11 is a schematic diagram of a left side section of a positioning block assembly of an embodiment of the present application;

[0044] Figure 12 is another schematic diagram of a left side section of a positioning block assembly of an embodiment of the present application;

[0045] Figure 13 is a schematic diagram of a right side section of a positioning block assembly of an embodiment of the present application;

[0046] Figure 14 is another schematic diagram of a right side section of a positioning block assembly of an embodiment of the present application;

[0047] Figure 15 is another schematic diagram of a positioning block assembly of an embodiment of the present application;

[0048] Figure 16 is a schematic diagram of a collimator assembly installation and disassembly of an embodiment of the present application;

[0049] Figure 17 is a perspective view of a support frame of an embodiment of the present application;

[0050] Figure 18 is a top view of a support frame of an embodiment of the present application;

[0051] Figure 19 is a side view of a support frame of an embodiment of the present application;

[0052] Figure 20 is a schematic diagram of an imaging device according to an embodiment of the present application. DETAILED DESCRIPTION

[0053] The foregoing and other features of the present application will become apparent to those skilled in the art upon consideration of the following description of the application with reference to the accompanying drawings. In the drawings, like reference numerals refer to like elements throughout. The application is specifically illustrated by the following examples, which are non-limiting. Thus, the present application is not intended to be limited to the embodiments described, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0054] In the embodiments of the present application, the terms "first", "second" and the like in the description and in the claims are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and are not intended to limit the scope of the embodiments to a given embodiment. The terms "comprise", "comprising", "include", "including", "contain", "containing" or any other similar phrase are used in the set context of elements in the embodiments of the application and / or the claims. They are not used in the sense of "consist only of" or "consisting only of" unless expressly specified otherwise.

[0055] In the embodiments of the present application, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. The terms "at least one" and "one or more" used in the context of elements in the embodiments of the application and / or the claims are to be understood as "one or more than one" and "at least one" unless otherwise specified. The term "about" means "approximately" unless otherwise specified. The term "according to" is used in the sense of "complying with" unless otherwise specified. The term "based on" is used in the sense of "based, at least in part, on" unless otherwise specified.

[0056] Features described and / or illustrated with respect to one implementation can be used in a similar or identical manner in one or more other implementations, combined with features of other implementations, or substituted for features of other implementations. The term "comprise" or "comprising" as used herein is used in the sense of "including" or "comprising" but not limited to, and can be used in the sense of "consisting essentially of, or "consisting of.

[0057] The medical imaging device described in the present application can be suitable for various medical imaging modalities including, but not limited to, CT (Computed Tomography) imaging device, PET (Positron Emission Computed Tomography)-CT, Magnetic Resonance Imaging (MRI), or any other suitable medical imaging device.

[0058] The system for obtaining medical image data can include the aforementioned medical imaging device, can include a separate computer device connected to the medical imaging device, and can also include a computer device connected to an Internet cloud, which is connected to the medical imaging device or a memory storing medical images through the Internet. The imaging method can be implemented independently or jointly by the aforementioned medical imaging device, the computer device connected to the medical imaging device, and the computer device connected to the Internet cloud. For example, the system for obtaining medical image data can be a CT imaging system or the like.

[0059] Exemplarily, the embodiments of the present application are described below in combination with an X-ray computed tomography (CT) imaging device. Those skilled in the art will understand that the embodiments of the present application can also be applicable to other medical imaging devices.

[0060] Figure 1 is a schematic diagram of a CT device of an embodiment of the present application, which exemplarily shows a part of the CT device. As shown in Figure 1 , the CT device 100 includes a scan gantry 101 and a patient table 102. The scan gantry 101 has a radiation source 103, a detector assembly or collimator 104 opposite to the radiation source 103, and an opening 105. A detection object 106 can lie on the patient table 102. The radiation source 103 emits an X-ray beam to the detector assembly or collimator 104. By scanning the detection object 106 through the radiation source 103 while the patient table 102 with the detection object 106 is moved into the scan gantry opening 105 entirely or partially, medical image data of the detection object 106 can be obtained.

[0061] Figure 2 is a side view of the scan gantry of the CT device of an embodiment of the present application, which exemplarily shows the position of the detector assembly or collimator 104. As shown in Figure 2 , the detector assembly or collimator 104 includes a plurality of detector units 104a and a data acquisition system (DAS) 104b. The plurality of detector units 104a sense the projected X-rays passing through the detection object 106.

[0062] The DAS 104b converts the collected information into projection data for subsequent processing according to the sensing of the detector units 104a. During the scan for acquiring the X-ray projection data, the scan gantry 101 and the components mounted thereon rotate around a rotation center 101c.

[0063] The above exemplarily illustrates the device for acquiring medical imaging data (or also referred to as medical image or medical image data) of the embodiments of the present application, but the present application is not limited thereto. The medical imaging device can be a CT device, a PET-CT or any other suitable imaging device. The embodiments of the present application are specifically described below in combination with the drawings. In each of the following embodiments, the medical imaging device is exemplarily taken as a CT device, and the description is also applicable to other medical imaging devices.

[0064] The embodiments of the present application provide a radiation detector module. Figure 3 Fig. 1 is a schematic diagram of the radiation detector module of the embodiments of the present application, showing an example of the radiation detector module 300 after installation of each component. Figure 4 Fig. 2 is another schematic diagram of the radiation detector module of the embodiments of the present application, showing an example of the radiation detector module 300 before installation of each component. As shown in Figure 3 and Figure 4 The radiation detector module 300 comprises a support frame 301, a detector circuit board 302, a positioning block assembly 303 and a collimator assembly 304.

[0065] For the convenience of description, in the present application, the longitudinal direction of the radiation detector module or the long side direction of the support frame is defined as the first direction (as shown by Z in Figure 3 and Figure 4 the second direction (as shown by X in Figure 3 and Figure 4 the third direction (as shown by Y in Figure 3 and Figure 4 the present application, and does not limit the directions of each device or component in use and manufacture.

[0066] The support frame 301 comprises a first end portion 301a and a second end portion 301b arranged oppositely. For example, the first end portion 301a and the second end portion 301b are arranged in parallel and respectively extend along the second direction (X direction). The first end portion 301a and the second end portion 301b can have a certain height relative to the support frame plane 301c, i.e., can be in the shape of a convex strip as shown in Figure 3 Alternatively, the first end portion 301a and the second end portion 301b can not have a height relative to the support frame plane 301c.

[0067] The first face of the detector circuit board 302 (as shown by 302a in Figure 4The upper surface shown) is mounted with a radiation detector element 302c for receiving the radiation emitted by the radiation source 103, and the second surface of the detector circuit board 302 faces away from the radiation source 103. Figure 4 The lower surface shown) is mounted to the support frame 301 at least at the first end 301a and the second end 301b. For example, the detector circuit board 302 can be a digital-to-analog conversion circuit board (ADB board), or other circuit board for performing specific signal processing, and the embodiments of the present application do not limit this.

[0068] For example, as shown in Figure 4 The first surface of the detector circuit board 302 can be mounted with a radiation detector element 302c for receiving the X-rays emitted by the radiation source 103. The length of the detector circuit board 302 along the first direction (Z direction) is substantially equal to the distance between the first end 301a and the second end 301b of the support frame 301, and the second surface of the detector circuit board 302 has a third end 302a and a fourth end 302b at both ends along the first direction (Z direction), which are aligned with the two ends of the support frame 301 and are connected to the two ends 301a, 301b of the support frame 301, respectively, and can be connected using, for example, screws or latches, and the embodiments of the present application do not limit this.

[0069] As shown in Figure 4 The third end 302a can be aligned with the first end 301a while the fourth end 302b is aligned with the second end 301b, or the third end 302a can be aligned with the second end 301b while the fourth end 302b is aligned with the first end 301a, and the embodiments of the present application do not limit the alignment and connection direction of the detector circuit board 302 and the support frame 301.

[0070] The positioning block assembly 303 includes a first positioning block 303a and a second positioning block 303b. The first positioning block 303a fixes the detector circuit board 302 to the first end 301a of the support frame 301, and the second positioning block 303b fixes the detector circuit board 302 to the second end 301b of the support frame 301. For example, one end of the positioning block assembly 303 has a through hole fixedly connected to the first end 301a or the second end 301b, and can be connected via the through hole using, for example, screws or latches, and the embodiments of the present application do not limit this.

[0071] The collimator assembly 304 is mounted to the first positioning block 303a and the second positioning block 303b at both ends, respectively, and the collimator assembly 304 is located on the side of the radiation detector element 302c facing the radiation source 103 (i.e. Figure 5(See the upper side shown). After the collimator assembly 304 is connected to the first positioning block 303a and the second positioning block 303b, its length along the first direction (Z direction) is approximately equal to the length of the detector circuit board 302 along the first direction. For example, the collimator assembly 304 has through holes at both ends that are fixedly connected to the positioning block assembly, and is connected via these through holes using fasteners such as screws or pins. The two ends of the collimator assembly 304 can be respectively mounted on the first positioning block 303a and the second positioning block 303b.

[0072] Therefore, in this embodiment, by using the positioning block structure on both sides of the collimator assembly on the detector circuit board, the collimator assembly can be easily replaced without affecting the positional accuracy of the scintillator in the sensor, thus improving operability and detection accuracy. Furthermore, the positioning block structure also allows the radiation detector to have a longer longitudinal dimension, thereby providing a large-size detector module with better operability and detector accuracy during collimator installation and maintenance.

[0073] The above provides an exemplary description of the overall situation of the radiation detector module in the embodiments of this application. The following will further describe each device or component. In the following description, the positioning post is, for example, detachable and can be mounted on a support frame. For ease of observation, the following figures show examples of positioning posts mounted on a support frame in some places and examples of positioning posts disposed in positioning holes in others; however, this application is not limited to these examples and does not affect the state during installation and use.

[0074] Figure 5 This is a schematic diagram of a support frame and a detector circuit board according to an embodiment of this application, showing an example where the detector circuit board has not yet been installed on the support frame.

[0075] like Figure 5 As shown, on the support frame 301, the first end 301a and the second end 301b respectively have first positioning posts 411 for positioning; the two ends of the detector circuit board 302 respectively have first positioning holes 421 corresponding to the first positioning posts 411. Thus, by using a set of positioning posts and positioning holes to position the detector circuit board, the installation of the circuit board can be simplified and the accuracy of the installation position can be guaranteed.

[0076] For example, such as Figure 4 As shown, a first positioning post 411a is provided on the first end 301a, and a first positioning post 411b is provided on the second end 301b. Figure 5(The location of the first positioning post 411a and the first positioning post 411b are shown only as an example due to partial obscuring). The first positioning post 411a and the first positioning post 411b are arranged opposite each other. The detector circuit board 302 has a first positioning hole 421a at one end and a first positioning hole 421b at the other end. The first positioning hole 421a corresponds to the first positioning post 411a and the first positioning hole 421b corresponds to the first positioning post 411b. When the first positioning post 411a passes through the first positioning hole 421a and the first positioning post 411b passes through the first positioning hole 421b, the detector circuit board 302 is positioned on the support frame 301 in the first direction and / or the second direction.

[0077] In some embodiments, such as Figure 5 As shown, the first end 301a and the second end 301b also have at least one second positioning post 412 (e.g., spaced apart from the first positioning post 411) along the second direction (X direction). Figure 5 The first end 301a has two second positioning posts 412a; both ends of the detector circuit board 302 also have second positioning holes 422 corresponding to the second positioning posts 412. Thus, by using at least two sets of positioning posts (411, 412) and positioning holes (421, 422) to position the detector circuit board, not only can the installation of the circuit board be simplified and the accuracy of the installation position be guaranteed, but also rotation can be prevented with a simple structure (i.e., one end of the detector circuit board 302 moves in the X direction).

[0078] For example, such as Figure 5 As shown, a first positioning post 411a (e.g., one) and a second positioning post 412a (e.g., two) are provided on the first end 301a. The first positioning post 411a and the second positioning post 412a are a certain distance apart in the second direction (X direction) of the first end 301a. A first positioning hole 421a and a second positioning hole 422a are provided at one end of the detector circuit board 302. The first positioning hole 421a corresponds to the first positioning post 411a, and the second positioning hole 422a corresponds to the second positioning post 412a. When the first positioning post 411a passes through the first positioning hole 421a and the second positioning post 412a passes through the second positioning hole 422a, the detector circuit board 302 is accurately positioned on the support frame 301 and cannot rotate or move around the first positioning post 411a.

[0079] For example, such as Figure 5 As shown, the second end 301b has a first positioning post 411b (e.g., one) and a second positioning post 412b (e.g., two), the first positioning post 411b and the second positioning post 412b ( Figure 6(For simplicity, not shown) There is a certain distance in the second direction (X direction) of the second end 301b; a first positioning hole 421b and a second positioning hole 422b are provided at one end of the detector circuit board 302. The first positioning hole 421b corresponds to the first positioning post 411b, and the second positioning hole 422b corresponds to the second positioning post 412b. When the first positioning post 411b passes through the first positioning hole 421b and the second positioning post 412b passes through the second positioning hole 422b, the detector circuit board 302 is accurately positioned on the support frame 301 and cannot rotate or move around the first positioning post 411b.

[0080] In some embodiments, the first positioning hole 421 and / or the second positioning hole 422 are oblong holes, wherein the first dimension of the oblong hole in the second direction (X direction) of the support frame is larger than the second dimension in the first direction (Z direction) of the support frame. For example, the oblong hole may allow for a specific degree of deformation of the circuit board or reduce stress during installation.

[0081] Figure 6 This is a schematic diagram of the shape of the positioning hole in an embodiment of this application, exemplarily showing an example of the detector circuit board 302 viewed from above. Figure 6 As shown, for example, the first positioning hole 421a is a circular hole, corresponding to the first positioning post 411a; the first positioning hole 421b is a circular hole, corresponding to the first positioning post 411b. The detector circuit board can be accurately positioned using the circular first positioning post and the first positioning hole.

[0082] like Figure 6 As shown, second positioning holes are respectively provided on both sides (upper and lower sides) of the first positioning hole along the second direction (X direction). Specifically, second positioning holes 422a are respectively provided on both sides of the first positioning hole 421a, and second positioning holes 422b are respectively provided on both sides of the first positioning hole 421b. The second positioning hole 422a is an oblong hole, corresponding to the second positioning post 412a; the second positioning hole 422b is an oblong hole, corresponding to the second positioning post 412b. Through the circular second positioning post and the oblong second positioning hole, a specific degree of deformation of the circuit board can be allowed, and the circuit board can be accurately positioned even if it deforms in the lateral direction.

[0083] like Figure 6As shown, taking the second positioning hole 422a as an example, the first dimension X1 of the oblong hole in the second direction (X direction) of the support frame is larger than the second dimension X2 in the first direction (Z direction) of the support frame. Furthermore, one or more holes 501 (e.g., screw holes) for fixing can be provided on the detector circuit board 302. The detector circuit board 302 can be fixed to the support frame 301 by means of the holes 501 and fasteners such as screws. This application is not limited to the shape, number, and specific location of the holes 501.

[0084] Figure 6 The example given is a circular first positioning hole and an oblong second positioning hole, but this application is not limited to this. For example, one of the two first positioning holes can be a circular hole and the other an oblong hole. Furthermore, more second positioning holes can be provided; all of these second positioning holes can be oblong holes, or some of the second positioning holes can be oblong holes while others are circular holes.

[0085] also, Figure 6 The following example illustrates the concept of placing the first circular positioning hole in the center. Figure 6 The example uses the midpoint of the X direction as the origin, with oblong holes on both sides (top and bottom), but this application is not limited to this. For example, the first circular positioning hole can be set on one side of the X direction (e.g., Figure 7 (on the lower side), thus, with the first positioning hole on that side as the origin, a waist-shaped hole is provided on the upper side. Alternatively, the circular first positioning hole can also be provided on the other side in the X direction (e.g., on the lower side), and a waist-shaped hole is provided on the upper side with the first positioning hole on that side as the origin. Figure 7 (on the upper side), and thus, taking the first positioning hole on that side as the origin, a waist-shaped hole is set on the lower side.

[0086] The detector circuit board has been described above as an example. The positioning block assembly will be described below.

[0087] Figure 7 This is a schematic diagram of the positioning block assembly 303 according to an embodiment of this application, showing an example where the detector circuit board 302 is mounted on the support frame 301, but the positioning block assembly 303 has not yet been installed.

[0088] like Figure 7 As shown, the first end (outer end or) of the first positioning block 303a Figure 7 The right end shown has a connection with the first positioning post 411a. Figure 7 The first positioning pin 411a is installed on the support frame 301, corresponding to the first positioning hole 601a, and the first end (outer end or) of the second positioning block 303b. Figure 8 The left end shown has a connection with the first positioning post 411b. Figure 8The first positioning post 411b is disposed in the first positioning hole 601b; the first positioning block 303a also has a second positioning hole 602a (for example, two) corresponding to the second positioning post 412a, and the second positioning block 303b also has a second positioning hole 602b (for example, two) corresponding to the second positioning post 412b.

[0089] Thus, the positioning block assembly is positioned by a first positioning hole (e.g., one) plus a second positioning hole (e.g., two), which makes the collimator assembly 304 correspond one-to-one with the position of the scintillator on the detector circuit board 302, and facilitates adjustment and reduces stress during installation.

[0090] Figure 8 This is another schematic diagram of the positioning block assembly according to an embodiment of this application. It exemplarily shows that the positioning block assembly has a multi-segment structure in the second direction (X direction), with adjacent segments at a certain angle and each segment facing the radiation source. Figure 8 An example is shown of either a first positioning block 303a or a second positioning block 303b.

[0091] like Figure 9 As shown, the positioning block assembly 303 includes, for example, three segments: a left segment 701, a middle segment 702, and a right segment 703. These three segments are connected in sequence and there is a certain angle between adjacent segments. Thus, the surface of the positioning block assembly 303 can form an arc surface approximately centered on the ray source. Figure 10 The example shown is merely illustrative and is not limited to the positioning block component 303.

[0092] The following explanation will use the middle section 702 as an example to illustrate the positioning holes on the positioning block assembly.

[0093] Figure 9 This is a schematic diagram of the middle section of the positioning block assembly according to an embodiment of the present application, showing a perspective view of the middle section 702 of the positioning block assembly 303 viewed from the side. Figure 10 This is another schematic diagram of the middle section of the positioning block assembly according to an embodiment of this application, showing a bottom view of the middle section 702 of the positioning block assembly 303 viewed from below. For example, the first positioning hole 601a of the first positioning block 303a and the first positioning hole 601b of the second positioning block 303b may have the same or different structures. The following description uses the same structure as an example.

[0094] like Figure 9 As shown, the middle section 702 of the positioning block assembly 303 has a positioning hole 601, through which the first positioning post 411 can pass. Figure 10As shown, the positioning hole 601 can be a circular first positioning hole that passes through the positioning block within the oblong groove 801. For example, the oblong groove 801 is located on the surface of the middle section 702 that contacts the detector circuit board 302, and does not pass through the positioning block. The first dimension of the oblong groove 801 in the second direction is larger than the second dimension of the oblong groove 801 in the first direction. This allows space for the positioning post to enter the positioning block, facilitating movement and locating the positioning hole, and further simplifying the installation operation.

[0095] The positioning hole 601 can be used in conjunction with the first positioning post 411. For example, when the positioning hole 601 passes through the middle section 702, the first positioning post 411 enters the waist-shaped groove 801 from the lower surface of the middle section 702 and passes through the waist-shaped groove 801 into the positioning hole 601.

[0096] Therefore, for example, by setting an oblong groove on the lower surface of the positioning block and setting a through hole in the oblong groove, the positioning column used for positioning can have room to move in the oblong groove and pass through the positioning block through the circular hole, which can improve the positioning accuracy and facilitate installation and operation.

[0097] Figure 9 and Figure 9 An example of the intermediate segment 702 is shown, but this application is not limited thereto. For example, the positioning hole 601 can be a circular first positioning hole, a circular first positioning hole within a waist-shaped groove, or a waist-shaped first positioning hole. The positioning hole 601 can be as follows: Figure 9 As shown, the positioning block is penetrated, but this application is not limited to this; for example, it can also be a hole that does not penetrate the positioning block.

[0098] like Figure 11 As shown, other holes 602 may also be provided on the middle section 702 of the positioning block assembly 303, such as screw holes for fixing. These screw holes can be circular holes, or they can be oblong grooves (e.g., as shown in the image). Figure 12 As shown, the waist-shaped groove is set in the circular hole on the upper surface of the positioning block, which facilitates the provision of operating space when fixing the positioning block and can also accommodate the screw head.

[0099] The above example illustrates the middle segment 702. The left segment 701 and / or right segment 703 of the positioning block assembly 303 may also have a similar waist-shaped groove structure to the middle segment 702. For example, the second positioning hole is located in the left segment 701 and / or right segment 703 and is located in the waist-shaped groove. The right segment 703 of the positioning block assembly 303 may have the same structure as the left segment 701, or it may have a different structure.

[0100] The following is a further explanation of the left-side segment 701. Figure 11is a schematic view of the left side section 701 of the positioning block assembly of an embodiment of the present application, showing a perspective view of the left side section of the positioning block assembly from the side. Figure 11 is another schematic view of the left side section 701 of the positioning block assembly of an embodiment of the present application, showing a bottom view of the left side section of the positioning block assembly from below.

[0101] Figure 11 As shown, the left side section 701 of the positioning block assembly 303 has a positioning hole 901, which can be, for example, a circular second positioning hole, a circular second positioning hole in a waist-shaped slot, or a waist-shaped second positioning hole. The positioning hole 901 can be, for example, as shown in Figure 12 through the positioning block, but the present application is not limited thereto, and the positioning hole 901 can also be a blind hole that does not pass through the positioning block. In addition, Figure 11 and Figure 12 The position of the positioning hole 901 is exemplarily shown in

[0102] As shown in Figure 11 and Figure 13 The left side section 701 of the positioning block assembly 303 can also be provided with other hole portions 902, such as a threaded hole for fixing, which can be a circular hole, or a circular hole in a waist-shaped slot (for example, as shown in Figure 14 The waist-shaped slot is provided on the upper surface of the positioning block) to facilitate leaving an operation space when fixing the positioning block, and can also accommodate the head of a screw.

[0103] The right side section 703 will be described below. Figure 13 is a schematic view of the right side section 703 of the positioning block assembly of an embodiment of the present application, showing a perspective view of the right side section of the positioning block assembly from the side. Figure 14 is another schematic view of the right side section 703 of the positioning block assembly of an embodiment of the present application, showing a bottom view of the right side section of the positioning block assembly from below.

[0104] As shown in Figure 13 and Figure 13 The right side section 703 of the positioning block assembly 303 has a positioning hole 1001 (not shown in Figure 14 because it is blocked by the second positioning column 412), and the second positioning column 412 can pass through the positioning hole 1001. As shown in Figure 13 The positioning hole 1001 is a circular second positioning hole. The present application is not limited thereto, and the positioning hole 1001 can also be a circular second positioning hole in a waist-shaped slot, or a waist-shaped second positioning hole that passes through the right side section 703. The positioning hole 1001 can be, for example, as shown in Figure 14As shown, the positioning block is penetrated, but this application is not limited to this; for example, it can also be a blind hole that does not penetrate the positioning block.

[0105] also, Figure 13 and Figure 14 The location of the positioning hole 1001 is marked in the example. Figure 13 and Figure 14 As shown, the right side segment 703 is provided with a plurality of through holes arranged in a row adjacent to the indicated positioning hole 1001. However, the positioning hole 1001 can be a through hole at any position on the end of the right side segment 703, and this application does not limit this.

[0106] like Figure 13 and Figure 15 As shown, other holes 1002 can also be provided on the right side section 703 of the positioning block assembly 303, such as screw holes for fixing. These screw holes can be circular holes or, for example, oblong grooves (e.g., as shown in the diagram). Figure 15 As shown, the waist-shaped groove is set in the circular hole on the upper surface of the positioning block, which facilitates the provision of operating space when fixing the positioning block and can also accommodate the screw head.

[0107] The above description of the multi-segment structure of the positioning block assembly is exemplary, but this application is not limited thereto. The left segment 701 and right segment 703 of the positioning block assembly 303 are for illustrative purposes only, and their structures can be interchanged. The position / structure is not limited by "left" and "right".

[0108] In some embodiments, the second end of the first positioning block has a storage portion for connecting to the collimator assembly, and the second end of the second positioning block has a storage portion for connecting to the collimator assembly; the storage portions of the first positioning block and the second positioning block are also respectively provided with a third positioning post for positioning the collimator assembly.

[0109] Figure 15 This is a schematic diagram of a segment of a positioning block according to an embodiment of this application, exemplarily illustrating a portion of the structure or shape of the positioning block assembly. Figure 15 An example is shown of a segment of either the first positioning block 303a or the second positioning block 303b. For example... Figure 14 As shown, one end of the positioning block 1501 ( Figure 15 The right end shown has the aforementioned positioning hole, and the other end 1502 ( Figure 16 The left end shown has a storage section 1101, on which a third positioning post 1102 is provided for positioning the alignment assembly 304.

[0110] like Figure 16As shown, the receiving part 1101 can be stepped and used in conjunction with the extension in the collimator assembly 304. The third positioning post 1102 can be a pin or other element, for example, cylindrical; the third positioning post 1102 can be integrally formed with the positioning block assembly 303, that is, manufactured by machining from the same body material such as metal, or manufactured by metal 3D printing; the third positioning post 1102 can also be detachable, that is, it can be separated from the positioning block assembly 303 and can be installed on the positioning block assembly 303, for example, installed in the receiving hole of the positioning block assembly 303 by means of threaded connection.

[0111] The positioning block assembly has been illustrated above. The installation of the positioning block assembly and the collimator assembly will be described below.

[0112] Figure 16 This is a schematic diagram of the installation and disassembly of the collimator assembly according to an embodiment of this application. It exemplarily shows an example where the positioning block assembly 303 is installed on the detector circuit board 302, and the collimator assembly 304 has not yet been installed.

[0113] like Figure 16 As shown, the first positioning block 303a has a positioning hole at its first end (outer end) and can be fixedly connected to the first end 301a. Its second end (inner end) has a receiving portion 1101a for connection to the collimator assembly 304. The second positioning block 303b has a positioning hole at its first end (outer end) and can be fixedly connected to the second end 301b. Its second end (inner end) has a receiving portion 1101b for connection to the collimator assembly 304. The collimator assembly 304 has extensions 1201a and 1201b on both sides, respectively. The first end of the collimator assembly 304 (located at...) Figure 16 The extension 1201a (shown on the right side) can be fixed to the storage portion 1101a of the first positioning block 303a, and the second end of the collimator assembly 304 (located on the right side) Figure 17 The extension 1201b (shown on the left side) can be fixed to the storage portion 1101b of the second positioning block 303b. Thus, by superimposing and fixing the extension and the storage portion, the installation and removal of the collimator can be facilitated.

[0114] The collimator assembly 304 also has third positioning holes at both ends corresponding to the third positioning post 1102. Figure 18 (The image is not shown due to obstruction). The number of third positioning pins 1102 and the number of third positioning holes can be the same. Thus, the accurate positioning between the positioning block and the collimator can be further ensured through the third positioning pins and the third positioning holes.

[0115] The following is an exemplary description of the structure related to the positioning block assembly on the support frame 301.

[0116] Figure 17is a perspective view of the support frame according to an embodiment of the present application, showing an example of observation from the side. Figure 18 is a top view of the support frame according to an embodiment of the present application, showing an example of observation from above.

[0117] In some embodiments, as shown in Figure 5 and Figure 5 , the support frame 301 has a first protrusion or support rail 1301a at a position corresponding to the receiving portion 1101a of the first positioning block 303a (also refer to Figure 19 ), and has a second protrusion or support rail 1301b at a position corresponding to the receiving portion 1101b of the second positioning block 303b (also refer to Figure 19 ); the first protrusion or support rail 1301a supports the detector circuit board 302 and the receiving portion 1101a of the first positioning block 303a, and the second protrusion or support rail 1301b supports the detector circuit board 302 and the receiving portion 1101b of the second positioning block.

[0118] Thus, through the support of the protrusions or support rails on the support frame, the stability can be further improved and the stress can be reduced. In addition, the support rail structure also allows the radiation detector to have a longer longitudinal dimension, so that a large-size detector module can be provided, which has better operability when installing and maintaining the collimator and has good detector accuracy.

[0119] In some embodiments, the first end portion 301a and the second end portion 301b are arranged in segments along the transverse direction of the support frame 301, and the adjacent segments are at an angle and each segment is at least directed towards the radiation source 103. Through the arc-shaped structure of multiple segments (for example, three segments), on the one hand, the size of the detector can be increased and the overall cost of the detector can be reduced, and on the other hand, the detection accuracy can be further improved.

[0120] In some embodiments, the first end portion 301a and the second end portion 301b respectively include a left segment, a middle segment and a right segment, the first positioning column 411 is located on the middle segment, and the second positioning column 412 is located on the left segment and / or the right segment.

[0121] Figure 19 is a side view of the support frame according to an embodiment of the present application, which exemplarily shows the structure or shape observed in the Z direction. As Figure 8As shown, the first end 301a or the second end 301b of the support frame 301 includes a left segment 1401, a middle segment 1402, and a right segment 1403. For example, the middle segment 1402 is horizontally arranged, and the left segment 1401 and the right segment 1403 are arranged to be inclined at a certain angle (for example, 5 degrees) with respect to the middle segment 1402. In this way, the left segment 1401, the middle segment 1402, and the right segment 1403 all face the radiation source 103. The specific angle of inclination between adjacent segments can be set according to the specific situation of facing the radiation source 103, and the application is not limited thereto.

[0122] In Figure 19 , for example, the first positioning column 411 is located on the middle segment 1402, one second positioning column 412 is located on the left segment 1401, and another second positioning column 412 is located on the right segment 1403. The second positioning hole corresponding to the second positioning column 412 can be a waist-shaped hole, so that for the arc-shaped multi-segment structure, the influence of deformation can be reduced, the positioning accuracy can be ensured, and the operability of installation can be improved.

[0123] In this way, since the radiation source 103 can be regarded as a point, the X-ray emitted by the radiation source 103 covers an area in the form of a fan beam, so that when the radiation detector module is in the form of an arc surface, the ray light can be vertically incident into the scintillator, so that the ray light can be better received.

[0124] In combination Figure 20 and Figure 20 , the positioning block assembly 303 and the support frame 301 can both be a multi-segment structure arranged in a transverse segment, so that they can be correspondingly directed towards the radiation source 103. The embodiments of the application take three segments as an example for illustration, but the application is not limited thereto, for example, it can be an arc structure with more than three segments. In addition, the transverse segment structure also allows the radiation detector to have a longer transverse dimension, so that a large-size detector module can be provided, which has better operability in installation and maintenance of the collimator and has good detector accuracy.

[0125] The embodiments of the application provide an imaging device, which includes an imaging apparatus and a radiation detector module as described in the above embodiments.

[0126] Figure 3 is a schematic diagram of an imaging device according to an embodiment of the application. As shown in Figure 1 , the imaging device 2000 includes Figure 2 a radiation detector module 300 as shown and an imaging apparatus 2001. The imaging apparatus 2001 performs tomographic imaging of an object according to an electric signal generated by a photoelectric conversion element of a sensor in the radiation detector module 300.

[0127] In some examples, the imaging device 2001 can also be a data acquisition system and an image reconstruction device. Details about the imaging device can refer to related technologies. Details about the imaging device 2000 can also refer to the foregoing details about the imaging device 1000. ​ and ​ .

[0128] The above embodiments are only exemplary, and the present application is not limited thereto. The above embodiments can be appropriately modified on the basis of the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0129] The above describes the embodiments of the present application in combination with specific embodiments, but those skilled in the art should understand that these descriptions are exemplary and are not a limitation on the protection scope of the embodiments of the present application. Those skilled in the art can make various modifications and changes to the embodiments of the present application according to the spirit and principles of the embodiments of the present application, and these modifications and changes are within the scope of the embodiments of the present application.

[0130] The preferred embodiments of the present application are described above with reference to the accompanying drawings. Many features and advantages of the embodiments are apparent from the detailed description, and the appended claims are intended to cover all such features and advantages within the true spirit and scope of the embodiments. Furthermore, since numerous modifications and changes can be made to the embodiments of the present application by those skilled in the art, it is not intended to limit the embodiments of the present application to the precise construction and operation described herein. Rather, the embodiments of the present application cover all suitable modifications and equivalents falling within the scope of the embodiments.

Claims

1. A radiation detector module, characterized in that, The radiation detector module includes: The support frame includes a first end and a second end disposed opposite to each other; A detector circuit board, wherein a radiation detector element for receiving radiation emitted by the radiation source is mounted on a first side of the detector circuit board facing the radiation source, and the second side of the detector circuit board facing away from the radiation source is mounted to the support frame at least at the first end and the second end; A positioning block assembly, comprising a first positioning block and a second positioning block, wherein the first positioning block fixes the detector circuit board to a first end of the support frame, and the second positioning block fixes the detector circuit board to a second end of the support frame; and A collimator assembly, the two ends of which are respectively mounted to the first positioning block and the second positioning block, and the collimator assembly is located on the side of the radiation detector element facing the radiation source.

2. The radiation detector module according to claim 1, characterized in that, The first end and the second end each have a first positioning post for positioning; The detector circuit board has a first positioning hole at each end corresponding to the first positioning post.

3. The radiation detector module according to claim 2, characterized in that, The first end and the second end also have at least one second positioning post spaced apart from the first positioning post along the transverse direction of the support frame; The detector circuit board also has second positioning holes at both ends, which correspond to the second positioning post.

4. The radiation detector module according to claim 3, characterized in that, The first positioning hole and / or the second positioning hole are oblong holes, wherein the first dimension of the oblong hole in the transverse direction of the support frame is greater than the second dimension in the longitudinal direction of the support frame.

5. The radiation detector module according to claim 3, characterized in that, The first end of the first positioning block has a first positioning hole corresponding to the first positioning post of the first end, and the first end of the second positioning block has a first positioning hole corresponding to the first positioning post of the second end; The first end of the first positioning block also has a second positioning hole corresponding to the second positioning post at the first end, and the first end of the second positioning block also has a second positioning hole corresponding to the second positioning post at the second end.

6. The radiation detector module according to claim 5, characterized in that, The first positioning hole of the first positioning block is a circular hole that passes through the first positioning block in the waist-shaped groove, and the first positioning hole of the second positioning block is a circular hole that passes through the second positioning block in the waist-shaped groove.

7. The radiation detector module according to claim 6, characterized in that, The first dimension of the waist-shaped groove in the transverse direction of the support frame is greater than the second dimension of the waist-shaped groove in the longitudinal direction of the support frame.

8. The radiation detector module according to claim 5, characterized in that, The second end of the first positioning block has a storage portion for connecting to the collimator assembly, and the second end of the second positioning block has a storage portion for connecting to the collimator assembly; The collimator assembly has extensions at both ends. The extension at the first end of the collimator assembly is fixed to the storage portion of the first positioning block, and the extension at the second end of the collimator assembly is fixed to the storage portion of the second positioning block.

9. The detector module according to claim 8, characterized in that, The support frame has a first protrusion at the position corresponding to the storage part of the first positioning block, and the support frame has a second protrusion at the position corresponding to the storage part of the second positioning block. The first protrusion supports the detector circuit board and the storage portion of the first positioning block, and the second protrusion supports the detector circuit board and the storage portion of the second positioning block.

10. The detector module according to claim 8, characterized in that, The storage portion of the first positioning block and the storage portion of the second positioning block are also respectively provided with a third positioning post for positioning the collimator assembly; The collimator assembly also has a third positioning hole at each end, corresponding to the third positioning post.

11. The radiation detector module according to claim 3, characterized in that, The first end and the second end are arranged in transverse segments along the support frame, with adjacent segments at a certain angle and each segment facing at least the radiation source.

12. The radiation detector module according to claim 11, characterized in that, The first end and the second end each include a left segment, a middle segment and a right segment, respectively. The first positioning post is located on the middle segment and the second positioning post is located on the left segment and / or the right segment.

13. The radiation detector module according to claim 11, characterized in that, The first positioning block and the second positioning block are arranged in segments along the transverse direction of the support frame and correspond to the segmented arrangement of the first end and the second end along the support frame.

14. An imaging device, characterized in that, The imaging device includes an imaging apparatus and a radiation detector module as described in any one of claims 1 to 13, wherein the imaging apparatus performs tomographic imaging of the object being detected based on an electrical signal generated by a photoelectric conversion element in the sensing component of the radiation detector module.

Images